Hi, I run JIRA v6.4.3 with JIRA Workflow Toolbox v2.1.33.
In my instance, I have 2 projects that share the same workflow, the same screen schemes, field schemes, permission schemes... almost everything is exactly the same.
I have a transition (Duplicate) which enforces the creation of a link of type duplicates from the transitioning issue to another one (chosen from the dedicated combobox). I created the transition with a Validation on Linked Issue (see attached).
In one project, it works like a charm. In the other, it throws the Message to show when validation fails every time (without a stacktrace to show for it) and won't conclude the transition.
Any help would be greatly appreciated.